WRO 300 HHCEN12104 Rev 09.2010 Regular maintenance 273.2.2 Chemical disinfection procedureChemical disinfection of the WRO, including product waterloop.1 The WRO shall be in Standby mode.2 Disconnect the WRO 300 H from the dialysis machine withthe quick connector on the product water loop. Alternativelythe connector can be left in place. However note the cautionbelow.3 Place a tag on the WRO 300 H, stating that Chemical disin-fection is in progress and what type of disinfectant is beingused.NOTEIf power failure occurs during Chemical disinfection 404 RINSEREQUIRED is displayed when the WRO 300 H restarts (also 401REMOVE WAND is displayed during the intake phase). Press untillight goes on, to initiate rinse.CAUTIONIf the WRO 300 H is not disconnected from the dialysis machine dur-ing the Chemical disinfection procedure, the test for residuals afterthe Chemical disinfection procedure must be performed on the dialy-sis machine according to the operator’s manual of this device.Disconnect the quick connectorNipple at the Dialysis machineWRO 300 H